To redirect your customer's to another page after their purchase, you need to insert a redirect code within your store's custom scripts.
Here is the code you need to insert:
<meta http-equiv="refresh" content="5; URL=https://dashnex.com/" />
5= is the number of seconds of delay before it will redirect the customer to another page
URL address= the website address of where you want your customers to be redirected to
Go to Main Store Settings menu.
Click on Custom Scripts.
Paste the redirect scripts in the CONFIRMATION PAGE SCRIPTS BEFORE </BODY> section
Click SAVE CHANGES.